Also, I'm going to cut our slit down to a width of one kilocycle, if I can possibly figure out a way of working on that narrow a band, and I'm going to step up our shifting speed to a hundred thousand.

A first day communications intelligence student, aware that Radio Tokyo and Radio Ominato were transmitting to warships using the 11,000 to 16,000 kilocycle range, could consult the Bureau’s charts and could approximate—if not pinpoint—the position of the vessels.